Allacta redacta Li & Wang, 2024

Li, Bian-Lun, Hu, Peng-Hui, Guo, Lin, Che, Yan-Li & Wang, Zong-Qing, 2024, Discovery of five new species of Allacta from Yunnan and Hainan, China (Blattodea, Pseudophyllodromiidae), ZooKeys 1191, pp. 1-21 : 1

Allacta redacta Li & Wang sp. nov.

Fig. 3A-M

Type material.

Holotype: China • male (SWU); Yunnan Prov., Pingbian County, Mount Dawei; 1496 m; 15 May, 2016; Lu Qiu, Zhi-Wei Qiu leg.

Diagnosis.

This species can be easily distinguished from its congeners by the wings being reduced and the pronotal disk with a brownish mushroom-shape marking.

Measurements

(mm). Male, pronotum length × width: 3.3 × 4.5, tegmina length: 4.5, overall length: 13.5.

Description.

Male. Body medium-sized, yellowish brown (Fig. 3A, B ). Face yellowish brown with a large brown crescent band; antennae brownish yellow, darkening apically; the fifth maxillary palpus brown, the rest brownish yellow (Fig. 3C ). Pronotum dark brown, lateral borders and posterolateral corners of pronotum pale yellowish brown (Fig. 3D ). Tegmina yellowish brown. Abdomen terga reddish brown, lateral border light brown; sterna brownish yellow. Subgenital plate with posterior half brown (Fig. 3K ). Cerci black in basal half of dorsal surface, and yellowish brown ventrally. Legs brownish yellow, coxae darker, tibiae yellowish with spines attachment area brown (Fig. 3J ).

Vertex with interocular space greater than distance between antennal sockets. Pronotum subparabolic with hind margins nearly straight (Fig. 3D ). The third and fourth maxillary palpi of approximately same length, slightly longer than the fifth (Fig. 3E ). Tegmina and hind wings reduced, tegmina reach anterior edge of the second abdominal tergite; hind wings reach nearly two-thirds length of metanotum, width approximately one-tenth of tegmina (Fig. 3H, I ). Anteroventral margin of front femur Type B3 (Fig. 3F ). Pulvillus only present on the fourth tarsomere (Fig. 3G ). Tarsal claws symmetrical and unspecialized, arolia present.

Male abdomen and genitalia. Abdominal terga unspecialized. Supra-anal plate short, nearly triangular, symmetrical, with hind margin blunt round. Paraprocts simple and plate-like, with scattered setae on distal margin (Fig. 3J ). Subgenital plate slightly asymmetrical, styli nearly elliptical, arising from the posterior margin concavities, right stylus slightly larger than the left, interstylar margin with broadly V-shaped notch (Fig. 3K ). Left phallomere complex (Fig. 3L ). Median phallomere (L2vm) stem slender, rod-like, apex blunt round with several small spines, with fine spines and bifurcation at three-quarters from base; median phallomere subsidiary sclerite (R3) C-shaped (Fig. 3K ). Hooked phallomere (R2) on the right of subgenital plate, with V-shaped incision (Fig. 3M ).

Etymology.

The specific name redacta derived from Latin, refers to both the tegmina and hind wings being reduced, which do not reach half the length of the normal wings of its congeners.

Distribution.

China (Yunnan).

Figures

Figure 3. Allacta redacta sp. nov., male holotype A dorsal view B ventral view C head, ventral view D pronotum, dorsal view E maxillary palpi, ventral view F front femur, ventral view G tarsus and tarsal claws of front leg H tegmen, dorsal view I hind wing, dorsal view J supra-anal plate and paraprocts, ventral view K subgenital plate and median phallomere, dorsal view L left phallomere, dorsal view M hook-like phallomere, dorsal view. Scale bars: 5 mm (A, B); 1 mm (C-M).